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{"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix responder length checking for UD request packets\n\nAccording to the IBA specification:\nIf a UD request packet is detected with an invalid length, the request\nshall be an invalid request and it shall be silently dropped by\nthe responder. The responder then waits for a new request packet.\n\ncommit 689c5421bfe0 (\"RDMA/rxe: Fix incorrect responder length checking\")\ndefers responder length check for UD QPs in function `copy_data`.\nBut it introduces a regression issue for UD QPs.\n\nWhen the packet size is too large to fit in the receive buffer.\n`copy_data` will return error code -EINVAL. Then `send_data_in`\nwill return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into\nERROR state."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/rxe: corrige la comprobaci\u00f3n de la longitud del respondedor para los paquetes de solicitud UD. Seg\u00fan la especificaci\u00f3n IBA: si se detecta un paquete de solicitud UD con una longitud no v\u00e1lida, la solicitud ser\u00e1 una solicitud no v\u00e1lida y El respondedor lo dejar\u00e1 caer silenciosamente. Luego, el respondedor espera un nuevo paquete de solicitud. El commit 689c5421bfe0 (\"RDMA/rxe: corregir la verificaci\u00f3n incorrecta de la longitud del respondedor\") pospone la verificaci\u00f3n de la longitud del respondedor para los QP de UD en la funci\u00f3n `copy_data`. Pero introduce un problema de regresi\u00f3n para los QP de UD. Cuando el tama\u00f1o del paquete es demasiado grande para caber en el b\u00fafer de recepci\u00f3n. `copy_data` devolver\u00e1 el c\u00f3digo de error -EINVAL. Entonces `send_data_in` devolver\u00e1 RESPST_ERR_MALFORMED_WQE. UD QP pasar\u00e1 al estado ERROR."}], "id": "CVE-2024-40992", "lastModified": "2024-11-21T09:32:01.300", "metrics": {}, "published": "2024-07-12T13:15:20.497", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: RDMA/rxe: Fix responder length checking for UD request packets", "id": "2297576", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2297576"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nRDMA/rxe: Fix responder length checking for UD request packets\nAccording to the IBA specification:\nIf a UD request packet is detected with an invalid length, the request\nshall be an invalid request and it shall be silently dropped by\nthe responder. The responder then waits for a new request packet.\ncommit 689c5421bfe0 (\"RDMA/rxe: Fix incorrect responder length checking\")\ndefers responder length check for UD QPs in function `copy_data`.\nBut it introduces a regression issue for UD QPs.\nWhen the packet size is too large to fit in the receive buffer.\n`copy_data` will return error code -EINVAL. Then `send_data_in`\nwill return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into\nERROR state."], "name": "CVE-2024-40992", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-40992\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-40992\nhttps://lore.kernel.org/linux-cve-announce/2024071250-CVE-2024-40992-6554@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T22:01:14.233893+00:00", "updated": "2025-07-12T22:01:14.233941+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}